W2 Opportunity: Sr. API Engineer jobs

Westlake, Texas

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Today

Senior Performance Engineer Westlake, TX Onsite Hybrid Experience: Design, develop, and execute load, stress, endurance, and scalability tests using tools such as JMeter, LoadRunner, or inhouse built tools. Create performance test strategies, scenarios, and scripts aligned with application architecture and business requirements. Integrate performance tests into CI/CD pipelines for continuous validation. Development experience in Java, Python, Perl, or SQL is nice to have. Understand critical p

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Contract

Senior Backend Engineer Java, Cloud (W2 Only | No C2C)

Bellevue, Washington

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16d ago

Cohesive Technologies is a global IT Services & Solutions company providing IT Staffing Services and Application Development Services necessary for technology leaders to deliver business value. We help our people and clients succeed by leveraging our expertise, deep industry and market knowledge, proprietary assessment tools and techniques, and project delivery methodologies. Through relationships with thousands of specialized professionals, we bring an unparalleled ability to match talent with

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Contract

Senior Software Engineer *** Direct End Client ***

Remote

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6d ago

Senior Software Engineer We re looking for a Senior Software Engineer to design and build scalable, secure systems for high-impact applications. This role requires deep technical expertise, strong problem-solving skills, and experience working in fast-paced environments. Responsibilities Develop and maintain robust backend services and APIs.Architect solutions for large-scale data processing and high-volume transactions.Implement best practices for security, compliance, and reliability.Collabora

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Contract, Third Party

Depends on Experience

Senior Data Engineer (Python, AWS, APIs)

McLean, Texas

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8d ago

Senior Data Engineer (Python, AWS, APIs) Do you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast-paced, collaborative, inclusive, and iterative delivery environment? At Capital One, you'll be part of a big group of makers, breakers, doers and disruptors, who solve real problems and meet real customer needs. We are seeking Data Engineers who are passionate about marrying data with emerging technologies. As a Capital One Data Engineer,

Full-time

USD 158,600.00 - 181,000.00 per year

Senior Automation Engineer

Merrimack, New Hampshire

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Today

Mastech Digital provides digital and mainstream technology staff as well as Digital Transformation Services for all American Corporations. We are currently seeking a Senior Automation Engineer for our client in the Consulting domain. We value our professionals, providing comprehensive benefits and the opportunity for growth. This is a Contract/Full-time position, and the client is looking for someone to start immediately. Duration: 10+ Months Contract/Full-time Location: Merrimack NH, Westlake T

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Contract

$55.00 - $60.00 per hour

Senior Software Engineers

Woburn, Massachusetts

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19d ago

Senior Software Engineers for Randstad Digital, LLC. Multiple openings. Headquarters: Woburn, MA. Develop, design, architect, implement software applications, UI, frontend features, platform functionalities, scripts, cloud infrastructure and containerization, monitoring solutions, security, backend components. Review integration of payment applications in banking ecosystems, test coverage, quality in release cycles, regulations, security standards for financial transactions, testing methodologie

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Full-time

$178,132 - $178,150

Senior Software Developers

Woburn, Massachusetts

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19d ago

Senior Software Developers for Randstad Digital, LLC. Multiple openings. Headquarters: Woburn, MA. Develop, design, analyze enterprise applications, API platforms, integration flow, schemas. Confer with product partners regarding functional requirements, setup routines, configure runtimes, review code, performance, and scrum. Communicate with front-end and back-end systems, implement secure authentication and authorization mechanisms to protect data integrity, and ensure reliability, functionali

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Full-time

$178,132 - $178,150

Sr. Java Developer (Backend)

Atlanta, Georgia

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Today

Commercial Programming Systems, Inc. (CPS) is an Information Technology consulting and staffing company offering a broad range of services aimed at helping our clients deliver high-quality, cost-effective systems. We are currently searching for a Sr. Java Developer (Backend) for our client located in Atlanta, (Perimeter Center) , Georgia. This is a hybrid position, and the selected person will need to work on-site. Target salary for this position is 100k to 130k The Core Java Backend Developer d

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Full-time

$100,000.00 - $120,000.00 per year

Sr. Java Developer (Backend)

Dallas, Texas

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Today

Commercial Programming Systems, Inc. (CPS) is an Information Technology consulting and staffing company offering a broad range of services aimed at helping our clients deliver high-quality, cost-effective systems. We are currently searching for a Sr. Java Developer (Backend) for our client located in Dallas, (Plano/Frisco) , Texas. This is a hybrid position, and the selected person will need to work on-site. Target salary for this position is 100k to 130k The Core Java Backend Developer designs,

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Full-time

$100,000.00 - $120,000.00 per year

Sr. Java Microservice Developer

West Chester, Pennsylvania

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Today

Position: Sr. Java Microservice Developer Location: West Chester, PA*Day 1 Onsite For this SR - Java, the candidates need to come with Tmobile experience. Tmobile experience with Network/provisioning/activation API's Mandatory Skills Java, Springboot, Microservices JD Skills & Experience: 7 10 years of relevant experience. Proficiency in Java programming language. Strong experience developing RESTful microservices using the Spring Boot framework. Experience designing and implementing BPMN proces

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Full-time, Part-time, Contract, Third Party

Software Engineer Lead

Dallas, Texas

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Today

Mastech Digital provides digital and mainstream technology staff as well as Digital Transformation Services for all American Corporations. We are currently seeking a Software Engineer Lead for our client in the Banking domain. We value our professionals, providing comprehensive benefits and the opportunity for growth. This is a Contract to Hire position, and the client is looking for someone to start immediately. Duration: 6 Months Contract to Hire Location: Pittsburgh, PA/Strongsville, OH/Birmi

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Contract

$135,000.00 per year

Senior Java Backend Developer

McLean, Virginia

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2d ago

Position: Senior Java Backend Developer Location: McLean, VA (Onsite) Work Type: C2C Experience: 10+ Years PETADATA is seeking a seasoned Senior Java Backend Developer with over 10 years of experience in designing and building robust, scalable, and secure backend systems. The ideal candidate will bring deep expertise in Java, particularly with frameworks like Spring Boot, and have strong experience in microservices architecture, API development, and enterprise-grade application development.

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Full-time, Third Party, Contract

Lead Java Developer

Minneapolis, Minnesota

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23d ago

Job Description / Responsibilities Lead the design, development, and delivery of scalable, high-performance backend systems using Java and related technologies. Provide technical leadership to the development team, including code reviews, architectural guidance, and best-practice implementation. Define and maintain backend architecture, microservices, integrations, and API frameworks. Collaborate with cross-functional teams (Frontend, DevOps, QA, Product) to drive end-to-end project execution. D

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Third Party, Contract

Up to $62

Java Full Stack Lead - Onsite

Rocklin, California

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14d ago

Title:Java Full Stack Lead - Onsite Location:Rocklin, CA Length:Long term Restriction:W2 only Description: Webcam interview; Long term project OnsiteLinkedin Must Job Description: Responsibilities: Full SDLC Ownership:Participate in analysis, design, coding, testing, and deployment of applications.Front-End Development:Develop user-facing features using HTML, CSS, JavaScript, and modern frameworks (e.g., React, Angular, Vue).Back-End Development:Build robust server-side logic, APIs (RESTful/Gra

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Contract

Depends on Experience

Senior Java Developer - contract - hybrid - Columbus, OH - Local and W2 candidates only

Hybrid in Dublin, Ohio

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20d ago

Hello! I'm searching for a Senior Java Developer for a long term (6 months +) contract job in Columbus, OH. This opening is hybrid and candidates must be willing to work in office in Dublin, OH multiple days per week. Non-local candidates will not be considered. This developer must have senior level experience with Java, Spring Boot, Hibernate/JPA, GraphQL, RESTful API's, Kafka, and similar technologies. Pay range for this contract job is $60-70 an hour W2. More job details below. If you are qua

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Contract

$60 - $70

Lead Java Developer

Hybrid in Stockton, Georgia

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11d ago

Title: Lead Java Developer Location: Atlanta, GA (Hybrid 2 days onsite) Experience: 810 Years Type: Open for both Contract (C2C)and Fulltime About the Role We are looking for an experienced Onsite Lead Engineer - Java to anchor a high-visibility customer data initiative for one of our marquee retail clients in Atlanta. This role blends hands-on development, system integration, and end-to-end API engineering with strong ownership of deliverables. You will work directly with business, product, a

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Third Party, Contract

Depends on Experience

Lead Java developer

Chicago, Illinois

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5d ago

Requirement Lead Java developer Location - Columbus, OH/Chicago, IL Experience 15+ years Need hands-on person, Advanced microservices, Spring boot, Strong in Kafka, along with a capacity to lead a team 15+ years of hands-on experience in JAVA FULL STACK - JAVA SPRING BOOTJava 11+, Spring Boot, Angular/React, REST APIs, Docker, Kubernetes, MicroservicesDesign, develop, test, and deploy scalable and resilient microservices using Java and Spring Boot.Collaborate with cross-functional teams to def

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Third Party, Contract

Depends on Experience

Sr Python Developer

Irving, Texas

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Yesterday

Job Title: Sr Python Developer Location: Irving, TX Need only Locals Duration: 12+ Months W2 Contract Job Description Experienced Senior Python Developer with 12+ years of hands-on development experience to design, build, and maintain scalable, high-performance applications. Key Responsibilities Design, develop, and maintain robust, scalable applications using Python.Lead end-to-end development including requirements analysis, system design, coding, testing, and deployment.Develop RESTful APIs a

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Contract

Depends on Experience

Direct Hire - Senior Software Engineer Full Stack

Dallas, Texas

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Yesterday

Technical Expertise: Required6+ years of proven hands-on development experience is a must in Core Java, Spring boot, REST, Microservices,Multithreaded process, Modern API, Cashing, Messaging framework, Angular 14, HTML, CSS, Scripts, SQL Hands-on experience in building enterprise, distributed, and edge applicationsStrong understanding of distributed architecture including Web Services (XML, JSON, REST, SOAP, micro services, Tomcat) and messaging Understanding of key UI design principles, design

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Full-time

Depends on Experience

Sr. Java Tech Lead

Plano, Texas

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2d ago

Job Title: Java Tech LeadLocation: Texas Plano(Day 1 onsite)Years of Experience: 15-20 Years<>Job Summary:We are seeking a highly skilled Java Tech Lead with extensive experience in Microservices architecture and SpringBoot framework. The ideal candidate will be responsible for designing, developing, and maintaining scalable software solutions that meet our business needs. You will work closely with cross functional teams to deliver high quality software products while adhering to best practice

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Contract

$70+

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W2 Opportunity: Sr. API Engineer jobs